What is your source to justify your claim (stated as a fact) that Hamas is diverting supplies and then selling them? Here [1] is a recent article in the NYT this week quoting two unnamed Israeli military officials saying Israel has found no proof of this claim despite Israeli officials repeatedly stating otherwise, and that the UN had been largely successful (via UNRWA) in feeding the Gazan population.
[1] https://www.nytimes.com/2025/07/26/world/middleeast/hamas-un...